Write "yes or no" questions for these sentences. Enter your answer and click on "Check answer". If your answer is incorrect, please try again until you find the correct answer to each question. If you need help, click on "Give me a letter" to get a letter or on "Show answer" to see the complete answer. Click on the arrows <= and => to move between the questions. You don't have to answer the questions in the given order, but you have to answer them all to complete the exercise.